Bearing



May 9, 1933.

W. H. GREENLEAF BEARING Filed March 1, 1929 IN VEN TOR.

w lu awl H. Gbeeneq? I I ATTOIRNE Patented May 9, 1933 UNITED STATESPATENT orrics WIILIAI a. GBEENLELF, or cnrcaeo, ILLINOIS, ASSIGNOB n'rowns'rmm c100! comm, or PERU, rumors,

A. CORPORATION OF ILLINOIS BEARING Application filed. March 1,

My invention relates to bearings and has for its object the roduction ofa bearing that is extremely e cient and frictionless so that it canreplace the jewelled bearlngs 6 commonly used in watches, clocks anddelicate electrical instruments, and at the same time extremely ruggedin construction so that it will stand up and not crack or break underthe extreme vibration and 1&111I1g such as is incidental to the use ofsuch devices when they are on automobiles, motor boats and aeroplanes. e

A further object of my invention is the production of a bearing thatretains a comparatively large quantity of the lubricating oil at thebearing surfaces of the bearing 1tself, as well as the bearing surfaceson the shaft or pivot used in conjunction w1th said bearing.

A further object of my invention 1s the production of such an efiicienthearing which is very simple in construction, easy to assemble, verydurable against wear and very inexpensive to produce.

2 I attain these objects by the means shown in the accompanying drawingin wh1ch:

Fig. 1 is a fra entary side view of a balance wheel device using mybearing.

Fi 21s a front view of the device shown I 80 in Figure 1 showin' mybearing in section along a line ABC 0 Figure 1.

Figure 3 is a side view of a modification of my bearing showing it usedwith a comcal bearing on the end of the shaft. 7 86 Figure 4 is a crosssectional view of m bearin shown in Figure 3 along a line AB of saiFigure 3.

Similar numerals represent similar parts through the several views.

A In the drawing, 1 and 2 represent the front and rear plates of a clockmovement having a balance wheel 3 which is mounted on a staff or shaft 4which balance 4 is .reciprocated by means of the usual hair spring 7 6 5alsoattached to said shaft 4, as well as the usual impulse pin 6 and theusual guard roll 7 which are associated with usual lever actuated by theusual clock movement both of which are not shown because the are wellknown and old inlthe art. Sha t 4 has a 1929. Serial No. 843,708.

hearing or pivot 8 on each of its ends with conical or reenforcing part9 where said pivot is formed off of the shaft 4 and each pivotpreferably has a more or less rounded end 10 all as shown in Figure 2.

The pivot '8 rests in the space formed intermedlate the three balls 11,12, and 13 regular high grade polished which are forced into circularaperture 14 in the receptacle 15 which is fitted in an aperture in sothe front plate 1 and held therein by means of the screws 16 as shown inFigure 2. The rounded end 10 of the pivot 9 1s revented from moving toomuch endwise y means of the ball 17 which is centrally disposed inrelation to the balls 11 12, and 13 and held in osition in the aperture18 in the rece tac e 15. The balls 11, 12 and 13 may'he forced into theaperture 14 and frictionally held therein or they may be placed thereinand the edge of the aperture 14 turned, forced or rolled over as shownat- 19 to hold said balls in proper relation to each other. While Ireferably use 3 balls as shown it is evident t at more than 3 balls canbe used especially if it is necessary or desirable to use a largerpivot. The similar receptacle 21 which carries the bearing for pivot 10in plate 2 has a screw threaded part 20 which is rather tightly fittedinto the threaded aperture shown in plate 2 so that the endshake'a-llowed for the ivot 10 can be properly ad- Lusted and saireceptacle 21'has notches 22 y means of which it can be readily adjustased with a suitable wrench.

In the modification shown in Figures 3 and 4 the shaft 4 instead ofhaving a cylindrical pivot with}; more or less rounded end, has aconical point and uses preferably only 3 balls as shown.

With my bearing it is evident that the balls do not rotate as is usualin ball bearings but each ball forms a bearing su port point whichpoints may or may not ie in a common plane and further the balls furnisha large expanse of closely associated surfaces so that a drop of oil utinto my hearing is capillarily attracted y said surfaces and the surfaceof the pivoted or com ical end of the shaft 50 that the oil wilLbedefinitely' retained in the bearing where it is needed and not bermitted to run oil and leave the bearing ry as isthe case with l theused on said clas of P instrumentsprem atom invention. I further findthat the piv ends 8 need not have more than a spr' temper in hardnessand therefore will not reak'nnder the extreme 1o vibration whenused-in'instruments on antomobiles and I further find that by platingchromium on the said pivots and the associated balls that theefliciencyis materially increased and that the hearing will wear is practical}indefinitely.

From above description of my hearing it is evident that it is very easyto construot and assemble it, that it will retain the oil indefinitelyaround the pivoted end of an the shaft, that it will wear indefinitelyand will not cracker break even under the severest conditions ofvibration, and produces an extremel eficient bearin at a very low cost.It wi be understoog, of course, that as while I have here shown one formof my invention, Ido not wish to limit myself to the exact construe-tonshown but desire to have it taken in a sense illustrative of any and allthe forms that'come fairly within so the scope of my claims.

I claim:

1. A receptacle having a bottomed, aperture, a centrally disposedsmaller aperture associated therewith, a Ball fastened in said assmaller aperture, three balls associated with said ball fastened againstrotation in said larger aperture, in combination with a shaft havmgapartournaledinsaidthreeballs a roun endportion that contacts 40 with theballin the smaller a rture to limit thisigewise motiolllnof said botft.

receptacle ving a tomed apertune, a centrally disposed smaller a rtureassociated therewith,,a ball fastened said it A 45 smaller aperture, 1lurality of balls assor elated with said fastened against rotatron insaid larger aperture, in combination w th a shaft havinga rt journaledin said balls and a round end portion that 50 contacts with the ball inthe smaller aperstgreftwto limit the sidewise motion of said WILLIAM H.GREENLEAF.

